Metal container



C. C. SOPER METAL CONTAINER Filed April 17, 1933 2 .sm w-sheez 1 ATTO RNEYS E P O S Q Q METAL CONTAINER 2 Sheets-Sheet 2 Filed April 17, 1933 INVENTOR- LEVEL/7ND C. 501%? ATTORNEYS Patented Dec. 22, 11*

attain Firestone Steel Products fl'ompa fihron,

@hio, a corporation of @hio Application April fl, 1933, enial No. lifitalilS t Claims.

This invention relates to metal containers, such as metal containers of non-corrodible material or lined with non-corrodible material to prevent contamination of the contents thereof, and more especially the invention relates to bung structures for such containers.

'lihe chief objects of the invention are to pro-.

vide for quickly sealing the container after it has been filled; to facilitate the tapping of the container; and to prevent contamination of the contents of the container from contact with the bung structure. Qther objects will be manifest in the following specification.

0f the accompanying drawings:

Figure l is a side elevation of a barrel embody.- ing the invention, in its preferred form, a part thereof being broken away to reveal the bung structure in elevation; I

l igure 2 is aplan view of-the bung structure, on a larger scale, a part thereof being brolren away and in section;

Figure 3 is a section on the line ll-t of Figure 2;

Figure are t;

a Figure 5 is a section on the line t-li of Figure 2;

Figures '8 and 7 are fragmentary transverse sections of modified tapping arrangements in the bung structure; and

Figures 8 and 9 are sections of other modifled tapping arrangements that may be. used.

Referring to the drawings, it is a barrel structure that comprises end reinforcements or chimes it, it, and has one of its heads provided with a hung structure generally designated B. Preferably the barrel proper is made from two metal sheets that are drawn to proper shape and have their marginal portions formed with respective circumferential flanges that are suitably permanently joined to each other in a medial seam it. The metal sheets from which the barrel is made may be of solid non-corrodible material or may be compositein structure, and comprise a layer it of ordinary cold rolled steel and a layer of stainless chromium steel alloy it. The latter layer is disposed inwardly and constitutes a non-corrodible lining for the barrel.

The bung structure B comprises a sput it, a locking nut it, and a cover it. The sput it is composed generally of malleable iron or other material suitable to casting, and is in the form of a ring adapted partly to telescope around .an upwardly extending flange it formed about an a is a section on the line 3- 3 of Fi (iUll. Mu -till) aperture it formed in one of the heads of the barrel ill. The sput may be welded to the flange 22. That portion of the inner periphery of the sput that extends beyond the flange 22 has a facing it of non-corrodible metal such as stainless steel, and said facing extends onto and over the, outer marginal portion of the sput. The inner edge of the facing ft is disposed adjacent the edge of flange if and is integrally united to the non-corrodible layer it by fused welding it. The outer periphery of the sput is formed with a radially-extending circumferential flange fit, that is cut away at three equi-distant places ii, if (Figure 2), the bottom face of the flange it, at one side of each cut-away region fl, being tapered or beveled toward said region as is most clearly shown at it, Figure 4.

The cover or cap til is a circular steel structure, the axial portion of which maybe suitably formed to accommodate any of a number of known tapping arrangements as subse uently will be described. The cover it is formed with a flat top portion it that rests upon the upper marginal portion of the sput iii, an annular gasket ll of rubber or other suitable material being'interposed therebetween to maize the barrel air tight and to prevent leakage of the contents thereof. The under surface of the cover has a facing or covering of non-corrodible material 32, the margin of which may be disposed behind the gaslret ii. If the facing if is made of stainless steel it will be spot-welded to the cover. The arrangement is such that none of the contents of the barrel can come into contact with corrodible material. The top portion lid of the cover preferably is hexagonal in shape as shown in Figure 2 to facilitate manipulation.

The marginal portion of the cover it is formed with as depending, annular skirt or flange it that has its outer peripheral face formed with male screw threads'tt, and is formed with three lugs it, it that extend radially inwardly from its lower margin. The lugs ft are spaced uniform- 1y circumferentially of the flange til, and each has an oblique or beveled upper surface that is complemental .to the tapered surface ft of the flange ft of sput it, as is most clearly shown in Figure 4. The arrangement is such as to provide a bayonet type look by which the cover it quickly may be secured to the sput. Thus when the cover is mounted on the latter with the lugs lit in registry with the recesses ll of flange it, a turn of the cover in clockwise di-.

rection as it is viewed in Figure 2, through a relatively small angle of about 30 degrees, will cause such cooperation between lugs 36 and flange 26 as to draw the cover down and seal the barrel by compressing the gasket 3|.

The locking nut 19 is a metal ring that has its inner periphery formed with female screw threads 38 that are complemental to screw threads of the cover 20, so that the cover and locking ring may be threaded together. The lower margin of nut I9 is formed with an inwardly extending circumferential flange 39 that is disposed below flange 26 of the sput l8, this arrangement being accomplished by mounting the nut on the sput before the latter is assembled with the barrel. Threading of the locking nut onto the cover 20, after the latter is tightened onto the sput by means of the bayonetlock, moves the flange 39 of the nut against the flange 26 of the sput, after which further turning of the nut pulls the cover 20 down more tightly against the gasket 3|. Preferably the locking ring is formed at its upper margin with a hexagonal flange 40 to facilitate manipulation, and preferably the threads 35, 38 are lefthand threads so that tightening of the locking nut also tends to tighten the bayonet lock connection of the cover and sput.

The construction described enables the barrel to be closed and sealed within a few seconds after it has been filled, the operation of applying the locking nut being deferred if desired. The construction also prevents contamination of the contents of the barrel from contact with corrodible material, and achieves the other objects set out in the foregoing statement of objects.

The cover 20 constituting the preferred embodiment of the invention, and shown in Figures 1 to 5 inclusive, is arranged for the Peerless type of tapping equipment, which is well known in the industry. To this end the cover is formed with an axial boss 42 that is formed with. an axial aperture 43, the latter having a slight- 1y restricted outer orifice because of a shoulder 44 formed in the aperture. The non-corrodible facing 32 extends into the axial aperture 43 as far as the shoulder 44, and a bung 45 in said therein.

aperture has a force fit with the said facing The bung 45 is formed of tinned rolled steel so as to be non-corrodible. It is hollow and has a closed outer end. It is formed with an annular shoulder 46 complemental to the shoulder 44, and a suitable gasket 41 of rubber is positioned between said shoulders to prevent leakage. In tapping the barrel the bung is pushed down into the barrel by a suitable tapping tool, and the outer end of boss 42 is formed with a radial flange 48 that is cut away at diametrically opposite regions 49, 49 (Figure 2) to permit the application of a tapping tool.

The modified structure shown in Figure 6 is identical with the preferred embodiment of the invention except that the non-corrodible facing 50 on the under side of the cover 20a is of cellophane or similar material. The facing 50 does not extend into bung aperture 430, but extends across the same, being applied after the bung 45a is in place. The cellophane facing 50 is scored at 5|, coincident with the bore 43a so that when the bung is driven into the barrel only that portion of the facing 50 defined by the scoring 5| will be ruptured.

In the modified construction shown in Figure '7, the boss 422) on cover 201) is formed with an axial bore 53 that tapers outwardly. A wooden bung 54 is driven into the bore 53, from the inner side of the cover, so as to permit said bung to be'driven back into the barrel in tapping the latter. The under side of cover 20b has a cellophane facing 50a that covers the inner end of bung 54, and said facing may be scored at 5la to permit driving in of the bung without rupturing more of the cellophane facing than is defined by the scoring. A sealing cap 55 of cellophane or other suitable material is secured over the top of boss 42b and over the outer end of bung 54 to keep dirt from the latter during shipping. The cap 55 may be removed before the barrel is tapped. It will be understood that the non-corrodible cover-facings shown in Figures 6 and '7 are removable and replaceable, so that after being ruptured by tapping they can be replaced before the container is refilled.

In the embodiment of the invention shown in Figure 8, the cover structure 200 is formed with an inwardly tapered axial aperture 51 that has a relatively large counterbore 56 at its outer end, said counterbore being formed with female screw threads 59. A wooden bung 60 is mounted in aperture 51, and a metal retaining member 6| is threaded into the counterbore 58 to retain the bung in place against pressure within the barrel. A chain 62 may be attached to the retaining member 6| and to any convenient place on the barrel to prevent loss of said retaining member. The bung 60 is formed with an outwardly opening recess or counterbore 63, and in the tapping of the barrel a portion of the wood in the bottom of the recess 63 is pushed down into the barrel. The under side of the cover 20c is covered with a layer of non-corrodible metal 64 which is welded to the cover and which extends into the aperture 51 so as to contact with the perimeter of the bung 60, the lower end of said aperture being somewhat enlarged, as shown, to receive said layer 64.

The embodiment of the invention shown in Figure 9, the cover 20d is suitably bored and counterbored to receive a well known type of tapping device 66 known as the Golden Gate valve. The under surface of the cover has a facing layer of non-corrodible metal 61 that makes a fluid-tight connection, by means of a rubber gasket 66, with the perimeter of the valve 66. That portion of the latter that is exposed to the contents of the barrel may be made of noncorrodible material. A thin metal disc 69 may be pressed onto the top of valve 66 to keep out dirt and other contaminating material during shipping.

Other modifications may be resorted to without departing from the spiritof the invention or the scope of the appended claims, which are not limited wholly to the specific construction shown and described.

What is claimed is:

1. In a metal container formed with an aperture, a sput secured to the container and rimming said aperture, 9. cover on said sput having a bayonet-lock connection therewith, a resilient gasket between the cover and the sput, and a locking ring having connection with the sput and cover adapted to effect compression of the resilient gasket.

2. A combination as defined in claim 1 in which the locking ring is permanently retained on the closure structure by the sput and is axially movable relatively thereof.

3. In a metal container formed with an aper- 75 ture, a sput secured to the container and rimming said aperture, a cover having a bayonet-lock connection with the sput, a resilient gasket between the cover and sput, said gasket being placed under compression by the said bayonet-lock connection when the cover is secured to the sput, and a locking ring providing a threaded connection between the cover and the sput for putting the gasket under increased compression.

4. In a metal container formed with an aperture, a sput secured to said container and rimming said aperture, said sput being formed exteriorly with a flange that is constructed to constitute one portion of a bayonet look, a cover on said sput formed with a depending circumferential skirt that has a plurality of inwardly extending lugs constituting the other portion of a bayonet look, a gasket between the sput and cover, and a locking ring permanently associated with the closure structure by a flange that underlies the flange on the sput, said locking ring being arranged for threaded engagement with the cover when the latter is secured to the sput by the bayonet lock.

5. A closure for a metallic receptacle, said closure comprising a sput secured to the receptacle, bayonet lugs with cam surfaces formed on said sput, a cover provided with a tapping bung and formed with bayonet lugs for engagement with the cam surfaces of the bayonet lugs on said sput, and a screw thimble having a flange for engagement with the bayonet lugs on said sput and having threaded engagement with said cover for tightening same after the engagement of the respective bayonet lugs.

6. A closure fora metallic receptacle, said closure comprising a sput secured to the receptacle, bayonet lugs formed on said sput, a cover provided with a tapping bung and formed with bayonet lugs for engagement with the bayonet lugs on said sput, and a screw thimble swiveled on said sput and having threaded engagement with said cover for tightening same after the engagement of the respective bayonet lugs.

'7. In a metal container formed with an aperture, a sput secured to said container and rimming said aperture, a. cover removably mounted upon said sput, and a locking ring embracing said cover and sput, said sput, cover and locking ring being angularly movable relatively of each other, and means on said cover adapted to interlock with complemental means formed on said sput and locking ring when said'members are moved angularly relatively of each other. 

